Waggonbau Gotha TL12

The gross weight is 18,000 kg and the kerb weight is 6,320 kg, which leaves a payload of 11,680 kg. At a length of 12 m and a width of 1,500 mm, this single model's footprint takes shape. Added to that: the wheelbase is 8,550 mm and the running gear carries 8 wheels.

Trailers of this weight class belong to heavy and long-distance haulage, hauled behind tractor units or heavy truck combinations. The compressed-air brake system, with automatic load-sensing, adjusts braking force to the load carried, and the axles carry the high payload on suitably rated suspension. With 8 wheels, the payload is spread across several axles, which such heavy semi-trailers need in order to keep the load on each axle within its allowed limit. On the road, a valid periodic roadworthiness inspection is mandatory, as is working lighting, regardless of how old the chassis itself is.

Buying used, the brake system and air lines deserve close attention: brake chambers, the load-sensing valve and coupling heads should be tight and free of corrosion. Check the chassis for rust at cross-members and axle mounts, the axle bearings for play, and the suspension for cracks. Tyres, brake linings and the electrical connector to the towing vehicle round off the check, and on older examples the lashing points and the load floor as well. Checking any surviving service records alongside the condition of the brake drums or discs and the wheel bearings rounds off a thorough inspection before any purchase.